- Type:
- Earthquake
- Date:
- March 11, 1231 CE
- Location:
- Istanbul
- Magnitude:
- 6.81 Mw
Cross-catalog records
This event is recorded in 3 separate scientific catalogs, each of which may give a different magnitude (the disagreement between catalogs is itself valuable for research):
- AHEAD: Mw 6.81
- NOAA_SIGEQ: Ms 6.9
- EMEC_2021: Mw 7
Other earthquake records of 1231 CE
- Italy, S. Germano, Montecassino
- Turkey, Istanbul (Constantinople) · Ms 6.9
- Turkey · Mw 7
- Italy · Mw 5.1
- Cassino · Mw 5.11
Source: Albini, P., Locati, M., Rovida, A. & Stucchi, M. (2013): European Archive of Historical Earthquake Data (AHEAD), INGV, doi:10.6092/ingv.it-ahead · License: CC BY 4.0 · institutional record ↗
Frequently asked questions
- When did 1231 Istanbul earthquake (Mw 6.8) (1231 CE) happen?
- March 11, 1231 CE.
- Where does this information come from?
- This record comes from Albini, P., Locati, M., Rovida, A. & Stucchi, M. (2013): European Archive of Historical Earthquake Data (AHEAD), INGV, doi:10.6092/ingv.it-ahead; it was not hand-authored and is stored together with its source.